src/m/sun2.h

   1 /* machine description file for Sun 68000's OPERATING SYSTEM version 2.
   2   Note that "sun2.h" refers to the operating system version, not the
   3   CPU model number.  See the MACHINES file for details.
   4    Copyright (C) 1985, 1986 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 1, or (at your option)
  11 any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22
  23 /* The following line tells the configuration script what sort of
  24    operating system this machine is likely to run.
  25    USUAL-OPSYS="note"
  26
  27 NOTE-START
  28 Sun 1, 2 and 3 (-machine=sun1, -machine=sun2, -machine=sun3;
  29                 -opsystem=bsd4-2 or -opsystem=sunos4)
  30
  31   Whether you should use sun1, sun2 or sun3 depends on the
  32                    VERSION OF THE OPERATING SYSTEM
  33   you have.  There are three machine types for different versions of
  34   SunOS.  All are derived from Berkeley 4.2, meaning that you should
  35   use -opsystem=bsd4-2.  Emacs 17 has run on all of them.  You will
  36   need to use sun3 on Sun 2's running SunOS release 3.
  37
  38   For SunOS release 4 on a Sun 3, use -machine=sun3 and
  39   -opsystem=sunos4.  See the file share-lib/SUNBUG for how to solve
  40   problems caused by bugs in the "export" version of SunOS 4.
  41 NOTE-END  */
  42
  43 /* The following three symbols give information on
  44  the size of various data types.  */
  45
  46 #define SHORTBITS 16            /* Number of bits in a short */
  47
  48 #define INTBITS 32              /* Number of bits in an int */
  49
  50 #define LONGBITS 32             /* Number of bits in a long */
  51
  52 /* 68000 has lowest-numbered byte as most significant */
  53
  54 #define BIG_ENDIAN
  55
  56 /* Define how to take a char and sign-extend into an int.
  57    On machines where char is signed, this is a no-op.  */
  58
  59 #define SIGN_EXTEND_CHAR(c) (c)
  60
  61 /* Say this machine is a 68000 */
  62
  63 #ifndef m68000
  64 #define m68000
  65 #endif
  66
  67 /* Use type int rather than a union, to represent Lisp_Object */
  68
  69 #define NO_UNION_TYPE
  70
  71 /* Sun can't write competent compilers */
  72 #define COMPILER_REGISTER_BUG
  73
  74 /* XINT must explicitly sign-extend */
  75
  76 #define EXPLICIT_SIGN_EXTEND
  77
  78 /* Data type of load average, as read out of kmem.  */
  79
  80 #define LOAD_AVE_TYPE long
  81
  82 /* Convert that into an integer that is 100 for a load average of 1.0  */
  83
  84 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  85
  86 /* Say that this is a Sun 2; must check for and maybe reinitialize
  87    the "sky" board.  */
  88
  89 #define sun2
  90
  91 /* Must use the system's termcap.  It does special things.  */
  92
  93 #define LIBS_TERMCAP -ltermcap
  94
  95 /* Mask for address bits within a memory segment */
  96
  97 #define SEGMENT_MASK (SEGSIZ - 1)
  98
  99 /* Arrange to link with sun windows, if requested.  */
 100 /* For details on emacstool and sunfns, see etc/SUN-SUPPORT */
 101 /* These programs require Sun UNIX 4.2 Release 3.2 or greater */
 102
 103 #ifdef HAVE_SUN_WINDOWS
 104 #define OTHER_FILES  ${etcdir}emacstool
 105 #define LIBS_MACHINE -lsuntool -lsunwindow -lpixrect
 106 #define OBJECTS_MACHINE sunfns.o
 107 #define SYMS_MACHINE syms_of_sunfns ()
 108 #define PURESIZE 132000
 109 #endif